fn fib(n) {
	if n < 2 { n }
	else { 
		fib(n-1) + fib(n-2)
	}
}

fib(10)

fn fac(n) {
	if n == 1 { 1 }
	else { n * fac(n-1) }
}

fac(1)
fac(2)
fac(3)
fac(fac(3))


